There are 7.4 billion people in the world. If the whole world were represented by a 30-person class: 14 people would eat rice as their main food. 12 people would be under the age of 20. 5 people would be from Africa. Answer these questions using the info above.1. How many people in the class would not eat rice as their main food? 2.What percentage of the people in the class would be under the age of 20? 3.Based on the number of people in the class representing people from Africa, how many people live in Africa?

27 +27 or 27times 2=54

the diffrence is 0

the speed is   miles per hour > is false

step-by-step explanation:

we know that  

a relationship between two variables, x, and y, represent a proportional variation if it can be expressed in the form or

in a proportional relationship the constant of proportionality k is equal to the slope m of the line and the line passes through the origin

the graph shown in the figure represent a direct variation

the slope of the line represent the speed

for the point

substitute the values of x and y

the linear equation is equal to

statements

case a) it takes hours to go miles

the statement is true

because

substitute

for

find the value of y in the linear equation

> is correct

case b) the speed is   miles per hour

the statement is false

because the speed is

case c) the unit rate for the trip is

the statement is true

because the speed is equal to the slope of the linear equation

case d) it took minutes to go the first miles

the statement is true

because

substitute

for

find the value of y in the linear equation

> is correct

3. 8,935,200 minutes

4. 227,040 feet